diff --git a/man/check-os-release.py b/man/check-os-release.py
index f0a64f3496..ec71e57a31 100755
--- a/man/check-os-release.py
+++ b/man/check-os-release.py
@@ -5,6 +5,7 @@ import ast
 import re
 import sys
 
+
 def read_os_release():
     try:
         filename = '/etc/os-release'
@@ -23,14 +24,13 @@ def read_os_release():
                 val = ast.literal_eval(val)
             yield name, val
         else:
-            print(f'{filename}:{line_number}: bad line {line!r}',
-                  file=sys.stderr)
+            print(f'{filename}:{line_number}: bad line {line!r}', file=sys.stderr)
+
 
 os_release = dict(read_os_release())
 
 pretty_name = os_release.get('PRETTY_NAME', 'Linux')
 print(f'Running on {pretty_name!r}')
 
-if 'debian' in [os_release.get('ID', 'linux'),
-                *os_release.get('ID_LIKE', '').split()]:
+if 'debian' in [os_release.get('ID', 'linux'), *os_release.get('ID_LIKE', '').split()]:
     print('Looks like Debian!')